CHO CÁC ĐIỂM PHÂN BIỆT A B C D , , , . ĐẲNG THỨC NÀO SAU ĐÂY Đ...

câu 18. - BAI TAP TRAC NGHIEM HINH HOC 10 CHUONG 1

BAI TAP TRAC NGHIEM HINH HOC 10 CHUONG 1

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Câu 18. Cho các điểm phân biệt A B C D , , , . Đẳng thức nào sau đây đúng ?

A. ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^{AB CD} ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^BC ^ ^DA . B. ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^AC ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^BD ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^CB ^ ^AD .

C. ^ ^AC ^ ^ ^DB ^ ^ ^ ^{CB DA} ^ . D. ^ ^AB ^ ^ ^AD ^ ^ ^ ^DC ^ ^BC .

                           

AB GC